JPH0236890A - Carrier for sewn member of sewing machine - Google Patents

Abstract

PURPOSE: To feed the next workpiece to a sewing area during carryingout by pressing a workpiece with a much smaller force inside the converting area of a conveyer belt while depending on the position of the terminal ridge of the workpiece when an arm is turned upward. CONSTITUTION: When a rear ridge 52 of a workpiece 8 is moved over a position where a front ridge 51 of the workpiece 8 is located during sewing, the next workpiece 8 can be placed on a table plate 6 and aligned. When a sensor 48 detects the rear ridge 52 of the workpiece 8, the switch of a motor 35 is turned off and a lower cylinder chamber 18 is newly loaded. At such a time point, when a conveyer belt 40 is stopped, the terminal area of the workpiece 8 is held with the small pressure of 2N corresponding to a differential pressure newly occupying the inside of a compressed air cylinder 115. The level of this pressure is selected so that most of the workpiece 8 drooped over a side ridge 9 can be held by the conveyer belt 40 and the terminal portion of the workpiece 8 can be pulled out under the conveyer belt 40 by a stapler 10.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention is a sewn article conveying device for a sewing machine for conveying a sewn article placed on a table board from a sewing position to a sending position, comprising: It has a conveyor belt 1 guided through a drive disk and a deflection disk, and an arm that carries the drive disk and the deflection disk and is supported pivotably about the axis of the drive disk, and the arm is compressible. The present invention relates to a sewn article conveying device coupled to a cylinder.

[Conventional technology and problems]

For example, in order to process sewing machine-processed items in a short time, such as when sewing buttonholes for scissors, it is necessary to
Quickly separates the finished product from the sewing position,
It is advantageous to feed the stapler in a defined manner, during which time the next item to be sewn is fed to the sewing position with overlap in time.

From Nishi 1-Itsu Patent Publication No. 2,213,576, an automatic sewing device is known which has two conveyor belts arranged side by side parallel to each other and driven continuously. Two conveyor belts are arranged on the edge of the table board carrying the work to be sewn, and guide the work in a continuous motion past the stitch forming position and transport it away from the sewing machine. Further, these conveyor bells 1 to 1 are located above a supply table which can be moved up and down. The supply table is movable from a deep supply position to a high delivery position, where the conveyor belt picks up the supplied and leveled sewing material and supplies it to the sewing machine.

The supply table, which can be moved up and down, makes it possible to perform multiple tasks over time, but if the sewing material is thin and easy to bend,
There is a risk that the front edge of the sewing product may get into the joint between the fixed table plate and the supply table and curl up. Furthermore, since the conveyor bell 1- operates continuously, it is difficult to deliver the sewing product to the stapler in a predetermined manner or to take the receiver from the stapler.

West German Patent Publication No. 30, which forms the premise of the present invention
No. 42,690 discloses a sewing material transport device for an overlock sewing machine which is arranged on a table plate. The conveying device optionally has one conveyor belt 1 - or two conveyor belts extending parallel to each other at a distance. The transport belt I. is guided via a drive disk and a deflection disk, which are arranged on a stationary support.

The deflection disc is arranged on an arm that is pivotable about a vertical axis and a horizontal axis. The pivoting position of the arm can be locked by two clamping screws. When the arm is not in use, it is first swiveled by hand together with the deflection disc to the side under the horizontally extending sewing foot support lever of the sewing machine and then swiveled up to the rest position. The arm is locked in this pivoted position. To carry out the photocleavage process,
The retaining part for the support element of the arm can be pivoted about the axis of the drive disk by means of a compressed air cylinder, so that the deflection disk is moved slightly upwards.

This known sewn article conveying device is adapted to the structure of the overlock sewing machine and its high position, which is attached to the second part of the table plate, but the table plate is aligned with the sewn article mounting surface of the sewing machine. It is not suitable for pulling out sewing items placed on the machine. Furthermore, there is no means for overlapping the sewing and supply of the next sewn product, and no means for delivering the completed sewn product to the stapler.

C Problems to be Solved by the Invention] An object of the present invention is to pull out the finished sewn product from the sewing area and supply it in a predetermined manner to a delivery position in the gripping area of the stapler in a sewn product conveying device of a sewing machine. In this case, the next object to be sewn can be supplied to the sewing area while being carried out.

[Means and Effects for Solving the Problems] In order to solve the above problems, the present invention provides an arm disposed on a rotating carrier,
One arm can be pressed against the sewing product by a rotation drive device at a position parallel to the sewing product placement surface, and when the arm is pivoted upward, the sewing product can be conveyed depending on the position of the end edge of the sewing product. The belt is characterized in that it can be pressed against the sewing product with a smaller force within the turning area of the belt.

A swiveling arm carrying a conveyor belt is placed on a swiveling carrier, and the swiveling holder is biased by a swiveling drive device with a pressing force that depends on the swiveling position of the arm, thereby transferring the processed sewn product. For removal from the sewing area, the arm can be pushed downwards with a relatively large force, so that the conveyor belt is sufficiently pressed by the drive disc and by the deflection disc to grip the sewing product by friction.

After the conveyor belt separates the processed workpiece from the sewing area and partially moves from the edge of the table plate downwards into the gripping area of the hesteepler, the conveyor belt The drive of 1- is stopped,
The pressing force is reduced in such a way that the partially hanging sewing material is still sufficiently held and can be pulled out from under the conveyor belt by the stapler without any particular force.

=5 As the conveyance bell 1~ further progresses in carrying out the sewing product,
After the front and back of the material to be sewn have passed under the drive disk of the conveyor belt, the arm is pivoted upwards together with the conveyor belt, i.e. at this point only the drive disk and the conveyor belt wound around it are swiveled upwards. During the further conveying movement resulting from the arm, it is pivoted so that the next article to be sewn can be fed into the sewing area under the arm.

In the case of long articles which have already reached below the drive disc of the conveyor belt in the sewing position, according to embodiment type 1, the arm can be removed from the table plate together with the conveyor belt 1 by appropriate pivoting of the swiveling carrier. It can be lifted to a completely separate position, so that the product to be sewn is not disturbed by the conveyor belt 1- either during feeding or during sewing.

Embodiment type 2 describes a simple construction of a pivoting drive for a pivoting carrier.

Embodiment 3 Accordingly, the turning surface of the conveyor belt at each pivoting position of the swivel carrier can be made to extend approximately perpendicularly to the table plate, so that even when the thickness of the sewing material is different, the conveyor belt The mounting surface of the machine is always oriented parallel to the table plate, so that sewing products of different thicknesses can always be equally gripped and transported.

According to Embodiment 4, the pressing force of the arm or the conveyor belt against the sewn product can be changed. This is made possible by adding more or less compensation to the pushing force generated by the pivoting drive by the gravitational force of the arm and the components carried thereon.

〔Example〕

Next, embodiments of the present invention will be described using the accompanying drawings.

The sewing machine M1 has a base 2. Three sewing machines 3, 4.5 are arranged laterally on the base 2 at intervals from each other. An L-shaped table board 6 is fixed to the base 2. The table plate 6 has sewing machines 3, 4.5 (not shown)
is aligned with the sewing product placement surface. On the table board 6,
A transport device 7 for the sewing product 8 placed on the table plate 6 is provided. A stapler 10 of a known structure is provided on the side of the table board 6 and partially extends under the ridge 9 of the table board 6.

The transport device M7 has a casing 11 fixedly provided on the table plate 6 and partially open.

Brass blades 1 to 12 are fixed to the casing 11. A longitudinally extending pivot carrier 13 is supported on the bracket 12 and has a flat U-shaped cross section.

A housing 14 of a compressed air cylinder 5 is pivotally mounted on the pivoting carrier 13 .

A screw rod 17 carrying the piston 16 of the compressed air cylinder 5 is pivoted to the bottom of the casing 11. The cylinder chamber of the casing 14 is divided by the piston 16 into two cylinder chambers 18 and 19.

Furthermore, the pivoting carrier 13 has a sleeve 2 with an internal thread.
0 is rotatably supported. An adjustment sleeve 21 with a male thread is screwed into the sleeve 20. A rod 23 , which is pivoted to the bottom of the housing 11 , is guided through the bottom 22 of the adjusting sleeve 21 . Bar 23
One end carries a stopper disc 24. stick 2
3 is provided with a compression spring 25, one end of the compression spring 25 is supported by the bottom part 22, and the other end is supported by the bottom part 22.
4 is supported. Components 20-25 form an adjustable elastic mechanism 26.

A fork-shaped connecting member 27 is rotatably supported on the rotary carrier 13 . The shaft 28 is the connecting member 2
It protrudes from 7 on both sides. An arm 29 having a U-shaped cross section and extending in the longitudinal direction is rotatably supported on one protruding portion of the shaft 28 . One side of the arm 29 abuts the connecting member 27, and the other side is fixed in the axial direction by the shaft 1 to the collar disk 30. A Cardan joint 31 of Cardan@32 is fixed to the other end of the shaft 28 that projects from the connecting member 27. The cardan shaft 32 is the second
The driven shaft 3 of the transmission motor 35 is connected to the
It is combined with 4.

Furthermore, the shaft 28 has a drive disk 3 inside the arm 29.
6 is provided. The drive disk 36 is connected to the adjustment spring 3
7, the shaft 28 is connected to the shaft 28 so as not to be relatively rotatable. A deflection disk 39 is rotatably supported in a pin 38 provided at the free end of the arm 29. Drive disk 36
A conveyor belt 40 is wound around the turning disk 39.

A piston rod 43 of a compressed air cylinder 44 is pivotally connected to a protrusion 41 fixed to the arm 29 via a ball joint 42 . The casing 45 of the compressed air cylinder 44 is
It is pivotally connected to the pivot carrier 13 by means of a ball joint 46 .

A first optical sensor 48 is provided within the elongated hole 47 of the arm 29 . Optical sensor 48 and drive disk 36
The distance is adjustable. Axis 4 of drive disk 36
A second optical sensor 50 is disposed below 9 in a fixed position.

During the sewing process in which three sewing machines 3 and 4.5 perform three sewing operations on the sewing object 8 at the same time, for example, buttonhole processing,
The arm 29 is pivoted upwardly about the axis 49 of the drive disk 36 into the position shown in FIG. 4 by means of a compressed air cylinder 44.

In this position, the sewing product 8, which is located both front and rear below the deflection disk 39, is not affected by the conveying device 7 and can move freely. At this point, the transmission motor 35 is switched off and both cylinder chambers 18,19 of the compressed air cylinder 15 are loaded with compressed air. Since the end surface of the lower cylinder chamber 18 is smaller than the end surface of the upper cylinder chamber 19 by the cross section of the screw rod 17, a higher pressure is generated in the upper cylinder chamber 19 than in the lower cylinder chamber 18. As a result, the housing 14 of the compressed air cylinder 15 is pushed upwards with a relatively small force, so that a clockwise rotational moment is imparted to the pivoting carrier 13 in FIG. This rotational moment forces the drive disk 36 against the table plate 6 with a force of approximately 2N.

When the sewing process is completed and the sewing material 8 is processed, the transmission motor 35 is switched on and the arm 29 is swung downward by the compressed air cylinder 44 to the position shown in FIG. At the same time, the lower cylinder chamber 18 of the compressed air cylinder 15 is evacuated, so that the rotating carrier 13
A stronger rotational moment acts on the drive disk 36.
and the turning disc 39, which has settled at this point, are approximately 2
It is pushed downward by the ON force. Pin 3 of conveyor belt 40
When the lower part of the sewing machine 8 grips the sewing material 8, this part pulls the sewing material 8 on the table board 6 toward the side edges 9 and the stapler 10.

When the sensor 50 detects the front and back 51 of the article 8, the arm 29 is pivoted upwardly about the axis 49 by the compressed air cylinder 44 into the position shown in FIG. 2 more
Due to the drive disk 36 that is pushed downward by the ON force,
The conveyor belt 40 further moves the sewing product 8 in the direction of the side edges 9. In this case, the part of the sewing material 8 that has been conveyed beyond the side edge 9 hangs down and is located in the gripping area of the stapler 10.

If the back and rear 52 of the sewing item 8 exceeds the position where the front and rear 51 of the sewing item 8 were located during sewing, the next sewing item 8 cannot be placed on the table plate 6'' and aligned. can.

When the sensor 48 detects the rear and rear positions 52 of the sewing material 8, the transmission motor 35 is switched off and the lower cylinder chamber 18 is turned off.
is newly loaded. At this point, due to the differential pressure newly prevailing in the compressed air cylinder 15, the end region of the sewing product 8 is held with a small pressing force of 2N when the conveyor belt 40 is stationary. The magnitude of this pressing force is such that the conveyor bells 1 to 40 can hold the sewing material 8, most of which is hanging down beyond the side edge 9, and the stapler 10 can hold the sewing material 8.
The size is selected such that the end portion of the conveyor belt 40 can be pulled out from under the conveyor belt 40.

The pressing force of the drive disk 36 when both cylinder chambers 18 , 19 are loaded simultaneously can be varied by rotating the adjusting sleeve 21 . That is, by tensioning the compression spring 25 more or less, it can be made variable by compensating the gravitational force between the arm 29 and the component carried by it.

If necessary, the arm 29 together with the conveyor belt 40 can be lifted off the table board 6 and completely separated. For this purpose, the upper cylinder chamber 19 of the compressed air cylinder 15 is evacuated, and the lower cylinder chamber 18, which is then continuously loaded, pulls the casing ``-4'' downwards, so that the pivoting carrier 13 Rotate counterclockwise as shown.

Next, embodiments of the present invention will be listed.

(1) The sewn product according to claim 1, characterized in that the arm (29) can be lifted to a position completely away from the sewn product placement surface (6) by the swing drive device (15). Conveyance device.

(2) The swing drive device is a double-acting compressed air cylinder (15)
2. A device for conveying a sewn material according to claim 1, characterized in that the cylinder chambers (18, 19) are made up of a single cylinder and can be loaded simultaneously in order to create a differential pressure.

(3) Arm (2) carrying transport bells 1 to (40)
9) is connected to a coupling member (27) which is pivotably supported on the pivoting carrier (13), which coupling member (27) simultaneously connects the drive disc (36) with the drive device (36) associated therewith. It also forms a support for the cardan shaft (32) which is connected to the drive device (35).
Claim 1, characterized in that the swivel carrier (13), the coupling element (27) and the cardan shaft (32) form a substantially parallel rank transmission. The sewn article conveying device described above.

(4) The pivoting carrier (13) is coupled with an adjustable elastic mechanism (26) in order to compensate for the weight of the arm (29) and the components (36, 39, 40) carried thereon. The sewn article conveying device according to claim 1 or any one of the above-mentioned items 1 to 3.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an automatic sewing device equipped with a sewn article conveying device and a stapler according to the present invention, FIG. 2 is a front view of the sewn article conveying device, and FIG. 3 is a partially sectional side view of the sewn article conveying device. , Fig. 4 is a front view of the sewn article conveying device when the arm is lowered, Fig. 5 is a front view of the sewn article conveying device when the arm is pivoted upward, and Fig. 6 is a front view of the sewn article conveying device when the arm is completely lifted. FIG. 6...Sewn product placement surface 8...Sewn product 13...Swivel carrier] 5...Compressed air cylinder (swivel drive device) 29.
...Arm 40...Transportation bell 1~

Claims (1)

[Claims] (1) A sewn article conveying device for a sewing machine for conveying a sewn article placed on a table plate from a sewing position to a sending position, which includes a conveyor belt guided via a drive disk and a turning disk. , an arm carrying a drive disk and a deflection disk and supported pivotably about the axis of the drive disk, the arm being connected to a compression cylinder, the arm (29) Arranged on the rotating carrier (13), and a sewing product placement surface (6)
The sewing product (
8) and, when said arm (29) is swiveled upwards, depending on the position of the end ridge (52) of the article to be sewn (8), the deflection area of the conveyor belt (40) A sewn article conveying device characterized in that it can press a sewn article (8) with a smaller force within the sewn article.